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DOI: https://doi.org/10.17487/RFC4819
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Secure Shell defines a user authentication mechanism that is based onpublic keys, but does not define any mechanism for key distribution.No common key management solution exists in current implementations.This document describes a protocol that can be used to configurepublic keys in an implementation-independent fashion, allowing clientsoftware to take on the burden of this configuration.
The Public Key Subsystem provides a server-independent mechanism forclients to add public keys, remove public keys, and list the currentpublic keys known by the server. Rights to manage public keys arespecific and limited to the authenticated user.
A public key may also be associated with various restrictions,including a mandatory command or subsystem. [STANDARDS-TRACK]
For the definition ofStatus,seeRFC 2026.
For the definition ofStream, seeRFC 8729.